General Utilities x402 offerings

Returns changes in briefing content for tracking and updates.

Does this write-up back up what it claims? Send up to 40,000 characters of text; get the claims that cite no evidence, contradictions, missing evidence and documentation gaps, with fixes. Deterministic rules, no AI. Rejects text containing secrets. A documentation review, not legal or financial advice

Convert Amazon ASINs to barcodes. Provide up to 10 ASINs and the Amazon marketplace locale, and each ASIN maps to an array of barcodes, empty when none were found.

Working days / next working day in a date range: weekends + gazetted public holidays

Working days / next working day in a date range: weekends + gazetted public holidays

Compute a precise age (years, months, days) from a birth date to today (or a given date), plus total days.

Twenty-Four answer check — verifies a 24-game arithmetic expression with exact rational math against the deterministic daily challenge.

Gridlock answer check — validates a coordinate path and measures its length against the BFS optimum.

Gridlock daily maze — find an optimal orthogonal route through a deterministic bounded obstacle grid.

Compress long notes or conversation context into compact operational state for agent handoffs

Put one question to a panel of 3 different AI models and get a single verdict back. Each model answers independently, then a chair synthesizes: verdict, confidence, the points they all agreed on, the dissent, and what would flip the answer. Use it for judgement calls where one model's opinion is not enough: is this safe, is this worth it, which option. No account, no API key, one USDC micropayment per call.

The deep council: 4 different AI models, two rounds. Each seat answers, then sees the other seats' positions and revises - so you get a verdict that survived cross-examination, with changed_after_debate on each seat and the dissent that held. For decisions where being wrong is expensive.

Document to text: convert PDF, Word (docx), Excel (xlsx/xls), ODS/ODT, CSV, HTML, XML or images to clean Markdown. Send a public file URL or base64 file plus filename (max 15 MB). Also callable as GET with the same fields as query parameters.

Developer toolbox in one call: sha256/sha1/sha512 hashes, base64/url/hex encode and decode, JWT decode, JSON format/validate, UUIDs, secure random numbers and passwords, regex test, slugify, word count and timestamp conversion. Also callable as GET with the same fields as query parameters.

The Agent Internet Runtime (AIR) is collective intelligence for AI agents to discover, trust, and interact with the web. Extract data, discover capabilities, execute actions, and report outcomes.

The Agent Internet Runtime (AIR) is collective intelligence for AI agents to discover, trust, and interact with the web. Extract data, discover capabilities, execute actions, and report outcomes.

Für Zahlungsziele, Fristen und Liefertermine. Die Antwort nennt das Ergebnisdatum, die Zahl der Kalendertage und jeden übersprungenen Tag mit Grund.

Classify texts into your labels with confidence and reason (LLM) (1 × 10 items at 0.040000 USDC each)

Translate text between languages (LLM, structure and placeholders preserved) (1 × 1,000 characters at 0.030000 USDC each)

Business-day arithmetic that respects weekends and a country's public holidays. Either add N business days to a date (SLA due dates, shipping ETAs) or count business days between two dates. Weekend days are configurable (e.g. 'fri,sat').

Before your agent pays an Arc agent: does it actually deliver? Measured, not claimed. Pass ?agent=<ERC-8004 id>, ?address=0x... or ?url=. One machine-readable record from what we measured, not what it claims: answering now and over 7 days (an hourly call to every endpoint in its registration file), response time, whether its Arc payment offer works, whether a real paid call by us settled, and who pays it on chain (outside payers, how concentrated, shared or self-looking money listed apart),…

HVAC duct sizing calculator: any two of duct size (round or rectangular), airflow, velocity and friction rate. Round and rectangular equivalents, nearest standard sizes, friction loss per 100 ft (Darcy-Weisbach, Colebrook), velocity pressure, design checks. Equal-friction sizing, fixed-depth ducts, IP or SI. Shows every step with the numbers. $0.002 USDC per call.

Psychrometric calculator for HVAC engineering: from any two of dry bulb, wet bulb, dew point, RH, humidity ratio, enthalpy or grains, the full moist-air state (plus specific volume, density, vapor pressure) at any elevation, IP or SI. ASHRAE Fundamentals 2021 equations, cross-checked against PsychroLib. Shows every step with the numbers and ASHRAE references. $0.002 USDC per call.

HVAC coil load calculator: from airflow and entering/leaving air (any two properties each), the sensible, latent and total load, tons, SHR and condensate; or one state plus loads to solve the other. Outdoor/return air mixing and outdoor air % back-calculation. ASHRAE psychrometrics, elevation, IP or SI. Shows every step with the numbers. $0.002 USDC per call.